CVE-2026-6421 | THREATINT

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Description

A vulnerability has been found in Mobatek MobaXterm Home Edition up to 26.1. This affects an unknown part in the library msimg32.dll. The manipulation leads to uncontrolled search path. An attack has to be approached locally. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 26.2 is able to mitigate this issue. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

PUBLISHED Reserved 2026-04-16 | Published 2026-04-17 | Updated 2026-04-17 | Assigner VulDB

HIGH: 7.3CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

HIGH: 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

HIGH: 7.0CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

6.0AV:L/AC:H/Au:S/C:C/I:C/A:C/E:POC/RL:OF/RC:C

Problem types

Uncontrolled Search Path

Untrusted Search Path

Product status

26.0
affected

26.1
affected

26.2
unaffected

Timeline

2026-04-03:	Countermeasure disclosed
2026-04-17:	Advisory disclosed
2026-04-17:	VulDB entry created
2026-04-17:	VulDB entry last update

Credits

haehanse (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/358020 (VDB-358020 | Mobatek MobaXterm Home Edition msimg32.dll uncontrolled search path) vdb-entry

vuldb.com/vuln/358020/cti (VDB-358020 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/778851 (Submit #778851 | Mobatek MobaXterm 26.1.0.5456 Uncontrolled Search Path — DLL hijacking with msimg32.dll) third-party-advisory

drive.google.com/…d/17bbNDzfoD3NNPlUMkSYs8bVzVbbwddnU/view exploit

mobaxterm.mobatek.net/download-home-edition.html related

download.mobatek.net/…581854/MobaXterm_Installer_v26.2.zip patch

cve.org (CVE-2026-6421)

nvd.nist.gov (CVE-2026-6421)

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